Assembly

Abstract

The invention provides a novel structure of a fiber body utilization mode. The assembly includes: a housing having a spiral groove formed so that a cooling liquid flows in a circumferential direction; the rotating motor is arranged in the shell; and a fiber body which is arranged in the spiral groove.

Description

Technical Field

[0001] The invention relates to an assembly. Background Art

[0002] Patent Document 1 discloses a cooling member in which a housing is filled with metal fibers and cooling is performed by utilizing the high or low thermal conductivity of the metal fibers.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-009433

[0006] Problems to be solved by the invention

[0007] After intensive research, the inventors found that when the coolant passes through the fiber, turbulence is generated, and cooling is promoted by the turbulence effect. Furthermore, it was found that by allowing the coolant to flow over the surface of the fiber, turbulence is generated due to the turbulence on the fiber surface, and cooling is also promoted by the turbulence effect. Based on these insights, it means that the cooling performance can be improved regardless of the material of the fiber body, and the fiber body can be used in a form completely different from the technical concept described in Patent Document 1. Summary of the invention

[0008] The present invention aims to provide a new structure for utilizing a fiber body based on the above concept.

[0009] According to one aspect of the present invention, a module includes: a housing having a spiral groove formed so as to allow a coolant to flow in a circumferential direction; a rotary electric machine provided in the housing; and a fiber body disposed in the spiral groove.

[0010] Effects of the Invention

[0011] According to one aspect of the present invention, by providing the fiber body in the spiral groove, turbulence can be generated in the spiral groove, thereby improving the cooling efficiency of the rotating electrical machine via the coolant. Therefore, a new structure of the use of the fiber body can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded perspective view of components of an embodiment of the present invention.

[0013] Figure 2 It is a front view of the inner shell of the outer shell.

[0014] Figure 3 It is a front view of the inner shell of the first modified example.

[0015] Figure 4 It is a front view of the inner shell of the second modification.

[0016] Figure 5 It is a front view of the inner shell of the third modified example.

[0017] Figure 6 It is a front view of the inner shell of the fourth modification. DETAILED DESCRIPTION

[0018] Hereinafter, a driving unit 1 as a unit according to an embodiment of the present invention will be described with reference to the drawings.

[0019] First, refer to Figure 1 and Figure 2 The drive unit 1 will be described.

[0020] Figure 1 It is an exploded perspective view of the drive assembly 1. Figure 2 1 is a front view of the inner housing 21 of the outer housing 20 of the drive assembly 1 .

[0021] like Figure 1 As shown, the drive assembly 1 includes: a rotating electric machine 10, a housing 20, and a fiber body 30. The drive assembly 1 is an electric drive assembly that uses the driving force of the rotating electric machine 10 to rotate and drive the driving wheels (not shown) of the vehicle. The assembly is used to drive the driving wheels of the vehicle, but is not limited to this, and can also be used to drive electrical products, for example.

[0022] The rotating electrical machine 10 has a motor function and / or a generator function. The rotating electrical machine 10 is formed in a substantially cylindrical shape. The rotating electrical machine 10 has a stator fixed to a housing 20 and a rotor (not shown) that rotates together with an output shaft.

[0023] The housing 20 accommodates the rotating electrical machine 10 . The housing 20 includes an inner case 21 and an outer case 27 .

[0024] The inner housing 21 is formed in a substantially cylindrical shape and includes a motor housing portion 22 , a spiral rib 23 , a spiral groove 24 , and a flange portion 25 .

[0025] The motor housing portion 22 is formed to have an inner diameter substantially the same as the outer diameter of the rotary electric machine 10 . The rotary electric machine 10 is housed in the motor housing portion 22 . The stator of the rotary electric machine 10 is fixed to the motor housing portion 22 .

[0026] The spiral rib 23 is formed to protrude from the outer peripheral surface of the inner housing 21. The spiral rib 23 is formed in a spiral shape in the axial direction (the extending direction of the rotating shaft of the rotary electric machine 10). The spiral rib 23 abuts against the inner peripheral surface of the inner housing housing portion 28 of the outer housing 27, which will be described later.

[0027] The spiral groove 24 is a spiral groove formed continuously between a pair of spiral ribs 23 adjacent to each other in the axial direction. Cooling water as a coolant for cooling the rotating electric machine 10 flows through the spiral groove 24. The coolant is not limited to cooling water, and may be other liquids such as cooling oil. A coolant inlet (omitted from the illustration) for introducing the cooling water for cooling the rotating electric machine 10 into the spiral groove 24 is provided at one end of the spiral groove 24. A coolant outlet (omitted from the illustration) for extracting the cooling water after cooling the rotating electric machine 10 from the spiral groove 24 is provided at the other end of the spiral groove 24.

[0028] The flange portion 25 is provided at an axial end portion of the inner housing 21. The flange portion 25 is formed in a substantially disk shape having a larger diameter than the spiral rib 23. One plane of the flange portion 25 constitutes an end surface 25a.

[0029] The outer housing 27 is a substantially bottomed cylindrical member covering the outer periphery of the inner housing 21. The outer housing 27 forms the outer shape of the drive unit 1. The end surface 27a of the outer housing 27 abuts against the end surface 25a of the flange portion 25 of the inner housing 21. The outer housing 27 has an inner housing housing portion 28.

[0030] The inner casing housing portion 28 is formed to have an inner diameter substantially the same as the outer diameter of the spiral rib 23 of the inner casing 21. When the inner casing 21 is housed in the inner casing housing portion 28, the outer peripheral surface of the spiral rib 23 abuts against the inner peripheral surface of the inner casing housing portion 28. As a result, the outer periphery of the spiral groove 24 is closed, and a spiral cooling water passage 26 is defined.

[0031] like Figure 1 and Figure 2 As shown, the fiber body 30 is arranged in the spiral groove 24. Specifically, the fiber body 30 is attached to the bottom surface of the spiral groove 24. The fiber body 30 is formed in a substantially rectangular shape. The fiber body 30 is arranged along the flow direction of the cooling water, that is, parallel to the flow direction.

[0032] The fiber body 30 is, for example, copper fiber, but may also be other metal fibers, carbon fibers, resin fibers, etc. When the cooling water flows along the surface of the fiber body 30, turbulence is generated in the cooling water due to the surface disturbance caused by the fiber.

[0033] Thus, by providing the fiber body 30 in the spiral groove 24, turbulence can be generated in the cooling water passage 26, thereby improving the cooling efficiency of the rotating electric machine 10 through which the cooling water passes. Therefore, a new structure of the use of the fiber body 30 can be provided.

[0034] In addition, since the cooling water flows along the surface side of the fiber body 30, turbulence can be generated by the fiber body 30, and the pressure loss of the cooling water can be reduced. Therefore, the energy required to circulate the cooling water can be suppressed to a small level.

[0035] In addition, since the fiber body 30 is provided on the bottom surface of the spiral groove 24, the turbulence of the flow of the cooling water near the bottom surface can be increased, and the amount of heat transfer from the bottom surface to the cooling water can be increased. In addition, even if the fiber body 30 is attached to the bottom surface of the spiral groove 24, it will not have a significant impact on the cross-sectional area of ​​the flow path. Since the flow of the cooling water is turbulent near the bottom surface, the pressure loss of the cooling water can be suppressed to a small level.

[0036] The fiber bodies 30 are arranged at intervals along the flow direction of the cooling water in the spiral groove 24. This can reduce the material of the fiber bodies 30. The fiber bodies 30 are arranged at the same position in the circumferential direction of the spiral groove 24. That is, the fiber bodies 30 have portions arranged in the axial direction.

[0037] Here, since there is a turbulent flow generating region where turbulence is generated on the downstream side of the fiber body 30, when the fiber body 30 is arranged at intervals, it is preferable to arrange the fiber body 30 at substantially regular intervals. In addition, if the fiber body 30 is arranged along the axial direction, the fiber body 30 can be arranged at substantially regular intervals in the spiral cooling water flow path, and when the fiber body 30 is installed, it can be installed at one go without rotating the housing 20, so the installability is also good.

[0038] The fiber bodies 30 are preferably arranged at intervals within the turbulent flow generation region with high cooling efficiency. In addition, a plurality of fiber bodies 30 may be attached to the spiral groove 24 by arranging a plurality of fiber bodies 30 in the axial direction at a plurality of locations.

[0039] Next, refer to Figure 3 to Figure 6 The inner case 21 of the outer case 20 according to a modification of the embodiment of the present invention will be described. In each modification described below, the differences from the above embodiment will be mainly described, and components having the same functions are denoted by the same reference numerals and description thereof will be omitted.

[0040] Figure 3 It is a front view of the inner housing 21 according to the first modification. Figure 4 It is a front view of the inner casing 21 of the second modification. Figure 5 It is a front view of the inner casing 21 according to the third modified example. Figure 6 It is a front view of the inner casing 21 according to the fourth modification.

[0041] like Figure 3 As shown, the inner housing 21 of the first modified example has a substantially U-shaped groove portion 23 a.

[0042] The groove portion 23a is arranged along a direction intersecting with the flow direction of the cooling water flowing in the spiral groove 24. The groove portion 23a is formed to be larger than the spiral groove 24 over the bottom surface and both side surfaces of the spiral groove 24. That is, the groove portion 23a is formed to be concave in the spiral groove 24. A plurality of groove portions 23a are provided at the same position in the circumferential direction. That is, the groove portions 23a are arranged in a straight line in the axial direction.

[0043] The fiber body 30 is formed in a substantially rectangular shape. The outer peripheral edge of the fiber body 30 is supported by a substantially rectangular frame member 31 over the entire circumference. The fiber body 30 is supported by the inner case 21 by fitting the frame member 31 into the groove 23a of the inner case 21.

[0044] The fiber bodies 30 are arranged at the same position in the circumferential direction of the spiral groove 24. That is, the fiber bodies 30 have portions arranged in the axial direction. The fiber bodies 30 are arranged along a direction intersecting with the flow direction of the cooling water flowing in the spiral groove 24. That is, the cooling water flows in a manner passing through the fiber bodies 30.

[0045] The fiber body 30 generates turbulence in the cooling water due to the fiber quality when the cooling water passes through it. Since the fiber body 30 is arranged to cross the flow direction of the cooling water substantially perpendicularly, it is preferable to use a fiber body with a coarser mesh than when it is arranged along the flow direction of the above embodiment.

[0046] As in the above embodiment, by providing the fiber body 30 in the spiral groove 24, turbulence can be generated in the cooling water passage 26, thereby improving the cooling efficiency of the rotating electric machine 10 through which the cooling water passes. Therefore, a new structure for utilizing the fiber body 30 can be provided.

[0047] According to the first modification, the fiber body 30 can be easily attached to the housing 20 by simply attaching the fiber body 30 to each attachment groove 26a. In addition, compared with the case where the fiber body 30 is attached to the bottom surface of the spiral groove 24, the area of ​​the fiber body 30 can be reduced.

[0048] Furthermore, since the entire flow of the cooling water is disturbed, the installation interval can be increased compared to the case where the fiber body 30 is attached to the bottom surface of the spiral groove 24. Therefore, the amount of the fiber body 30 used can be further reduced.

[0049] In addition, you can also Figure 4 As shown in the second modified example, the groove portion 23a is formed across a plurality of spiral ribs 23 and spiral grooves 24, and a single frame member 31 inserted into the groove portion 23a supports a plurality of fiber bodies 30. In this case as well, turbulence can be caused in the cooling water passage 26, so that the cooling efficiency of the rotating electric machine 10 through which the cooling water passes can be improved, and the fiber body 30 can be more easily attached to the housing 20.

[0050] like Figure 5 As shown, in the inner casing 21 of the third modified example, the fiber body 30 is formed in the same spiral shape as the spiral groove 24 and is adhered to the bottom surface of the spiral groove 24 .

[0051] According to the third modification, similarly to the above-described embodiment, by providing the fiber body 30 in the spiral groove 24, turbulence can be generated in the cooling water passage 26, thereby improving the cooling efficiency of the rotating electric machine 10 through which the cooling water passes. Therefore, a new structure for utilizing the fiber body 30 can be provided.

[0052] Furthermore, according to the third modification, since the fiber body 30 only needs to be attached to the bottom surface of the spiral groove 24 , the fiber body 30 can be easily attached to the housing 20 .

[0053] In addition, you can also Figure 5 As shown in the fourth modified example, instead of attaching the fiber body 30 to the bottom surface of the spiral groove 24, the fiber body 30 is simply wound in the spiral groove 24 and stored in the spiral groove 24. In this case as well, turbulence can be caused in the cooling water passage 26, so that the cooling efficiency of the rotating electric machine 10 through the cooling water can be improved, and the fiber body 30 can be more easily attached to the housing 20.

[0054] The structure and effects of the above-mentioned embodiment will be summarized and described.

[0055] (1) The drive unit 1 includes: a housing 20 having a spiral groove 24 formed so as to allow cooling water to flow in a circumferential direction; the rotary electric machine 10 disposed in the housing 20 ; and the fiber body 30 disposed in the spiral groove 24 .

[0056] According to this structure, by providing the fiber body 30 in the spiral groove 24, turbulence can be generated in the spiral groove 24, and the cooling efficiency of the rotating electric machine 10 through the cooling water can be improved. Therefore, a new structure of the use of the fiber body 30 can be provided.

[0057] (2) The cooling water flows along the surface side of the fiber body 30 .

[0058] According to this structure, turbulent flow can be generated by the fiber body 30, and the pressure loss of the cooling water can be reduced.

[0059] (3) The cooling water flows through the fiber body 30 .

[0060] According to this structure, the fiber body 30 can be easily attached to the housing 20 .

[0061] (4) A plurality of fiber bodies 30 are provided, and the plurality of fiber bodies 30 are arranged at intervals along the liquid flow direction in the spiral groove 24 .

[0062] According to this structure, the amount of material used can be reduced.

[0063] (5) The plurality of fiber bodies 30 are mounted so as to have portions arranged in the axial direction.

[0064] In this structure, since there is a turbulent flow generating area that generates turbulent flow on the downstream side of the fiber body 30, when the fiber body 30 is arranged at intervals, it is preferable to arrange the fiber body 30 at substantially regular intervals. In addition, if the fiber body 30 is arranged along the axial direction, the fiber body 30 is arranged at substantially regular intervals in the spiral cooling water flow path, and when the fiber body 30 is installed, it can be installed at one go without rotating the housing 20, so the installability is also good.

[0065] (6) The fiber body 30 is wound along the spiral groove 24 .

[0066] According to this structure, the fiber body 30 can be attached to the housing 20 more easily.

[0067] Although the embodiment of the present invention has been described above, the above embodiment merely shows an application example of the present invention and does not mean that the technical scope of the present invention is limited to the specific configuration of the above embodiment.

[0068] Explanation of symbols

[0069] 1: Drive components (components)

[0070] 10: Rotating motor

[0071] 20: Shell

[0072] 24: Spiral groove

[0073] 30: Fiber body

Claims

1. A component having: a housing having a spiral groove formed in such a way that a coolant flows in a circumferential direction; a rotating motor disposed in the housing; Fiber body, The fiber body is arranged in the spiral groove.

2. The assembly of claim 1, wherein: The cooling liquid flows along the surface side of the fiber body.

3. The assembly of claim 1, wherein: A cooling liquid flows through the fiber body.

4. The assembly of claim 1 or 2, wherein: A plurality of the fiber bodies are provided, The plurality of fiber bodies are arranged at intervals along the liquid flow direction in the spiral groove.

5. The assembly of claim 4, wherein: The plurality of fiber bodies are mounted so as to have portions arranged in the axial direction.

6. The assembly of claim 1, wherein: The fiber body is wound along the spiral groove.

Images